GB/T 36146-2018Rolled Copper foil for lithium ion battery (English PDF)

1 Scope

This Standard specifies the requirements, test methods, inspection rules, marking, packing, transportation, storing, certificate of quality, and order form (or contract) content of rolled copper foil for lithium ion battery.

This Standard applies to the rolled copper foil (hereinafter known as copper foil for short) for manufacture of lithium ion battery.

2 Normative references

The following documents are indispensable for the application of this document.

For the dated references, only the editions with the dates indicated are applicable to this document. For the undated references, the latest edition (including all the amendments) are applicable to this document.

GB/T 5121 (all parts) Methods for chemical analysis of copper and copper alloys

GB/T 5231 Designation and chemical composition of wrought copper and copper alloys

GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values

GB/T 8888 Wrought heavy non-ferrous metal products - packing, marking, transportation, storing and certificate of quality

GB/T 22638.4 Test methods for aluminium and aluminium alloy foils - Part 4. Determination of surface wetting tension

GB/T 26303.3 Measuring methods for dimensions and shapes of wrought copper and copper alloys - Part 3. Sheets and strips

GB/T 29847-2013 Test methods for copper foil used for printed boards

YS/T 668 The sampling method of physical and chemical testing for copper and copper alloys

3 Requirements

4 Test methods

5 Inspection rules

5.5.1 Rounding off for numerical values and judgement of inspection results shall be carried out according to the provisions of GB/T 8170.

5.5.2 When the chemical composition is unqualified, the lot of products is judged to be unqualified.

5.5.3 When the overall dimensions and their tolerances are unqualified, the lot of products represented by the sample is judged to be unqualified.

5.5.4 When the mechanical properties are unqualified, from the lot of products (including the roll of products represented by the unqualified sample), double the number of samples shall be taken for repeated testing. If the repeated test results are all qualified, the lot of products is judged to be qualified. If there are still samples having unqualified properties in the repeated test results, the lot of products is judged to be unqualified; or the supplier inspects roll by roll, and the qualified products are delivered.

5.5.5 When the surface wetting tension, oxidation resistance, roughness, and pinhole are unqualified, from the lot of products (including the roll of products represented by the unqualified sample), double the number of samples shall be taken for repeated testing. If the repeated test results are all qualified, the lot of products is judged to be qualified. If there are still samples having unqualified properties in the repeated test results, the lot of products is judged to be unqualified; or the supplier inspects roll by roll, and the qualified products are delivered.

5.5.6 When the appearance quality is unqualified, this roll of products is judged to be unqualified.

6 Marking, packing, transportation, storing, and certificate of quality

The marking, packing, transportation, storing, and certificate of quality of copper foil shall comply with the provisions of GB/T 8888.

7 Order form (or contract) content

The order form (or contract) for ordering the products listed in this Standard shall include the following contents.

a) Product name;

b) Designation; […]